Anisotropy of the normal state resistivity and susceptibility of untwinned YBa2Cu3O7-δ single crystals
Creators
- 1. Science ampersand Technology Center for Superconductivity and Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- 3. Department of Physics, Purdue University, West Lafayette, Indiana 47907 (United States)
- 4. Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60680 (United States)
- 5. Department of Physics, University of California-Davis, Davis, California 95616 (United States)
Description
We present measurments of the a-b anisotropy of the normal state resistivity ρa/ρb and measurements of the normal state magnetization along the three crystal axes. ρa/ρb increases with increasing temperature and reaches a (sample dependent) value of 1.2 to 1.85 near room temperature. The results show that the CuO chains are metallic and that they can have a conductivity comparable to that one of the CuO2 planes. A model of a parallel circuit of planes and chains is used to analyse the data. Superconducting fluctuations are found to be much more pronounced in the planes than in the chains. The normal state susceptibility shows the onset of strong diamagnetic fluctuations at temperatures below 200 K. At higher temperatures the anisotropy χc>σa>σb is observed and compared to predictions based on a model of local Cu-moments in the planes and chains
Additional details
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 219
- Journal Issue
- 1
- Series
- AIP Conf. Proc.
- Journal Page Range
- 139-146
- ISSN
- 0094-243X
- CODEN
- APCPC
Conference
- Title
- 4. annual conference on superconductivity and its applications.
- Dates
- 18-20 Sep 1990.
- Place
- Buffalo, NY (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 23074454
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANISOTROPY; BARIUM OXIDES; COPPER OXIDES; ELECTRIC CONDUCTIVITY; HIGH-TC SUPERCONDUCTORS; MAGNETIC SUSCEPTIBILITY; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRICAL PROPERTIES; MAGNETIC PROPERTIES; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS
Optional Information
- Secondary number(s)
- CONF-900990--.